Years of contracts, minutes, spreadsheets, scans and old drafts, many of them saved more than once under different names. A new director, an investor or a buyer needs the story in there, and nobody has weeks to read it.
The batch processor reads all of it. You describe what you need once, in plain words, and that description steers every step: what counts as relevant, which facts to pull out and what the report says. So the same tool works for getting a new director up to speed, preparing for due diligence or understanding a drive you have just inherited.
Fast models do the bulk reading, through batch processing that costs about half the price of asking the same questions one at a time. The result is compact and cited, ready for you or a frontier model to reason over.